Thinking about a roller furler for next season. The CDI FF2 furler instructions indicate that there must be a toggle at both ends of the forestay. On my 1985 Hunter 23 there is a rather peculiar upper end attachment point that consists of a slot into which and sort of ball shaped end of the forestay fits. I am wondering if that needs to be replaced with a new forestay and a new attachment point. What advice from those of you who have installed a furler on a Hunter 23 ????